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You searched for: creator:"P. Abbott"
[texts]Teach Yourself Algebra - P. Abbott
P. Abbott Teach Yourself Algebra Ihe English Universities Press Ltd. 1969 Acrobat 7 Pdf 34.9 Mb. Scanned by artmisa using Canon DR2580C + flatbed option
Keywords: Mathematics; Equations; Factors; Fractions; Quadratic Functions; Surds
Downloads: 1,153
[texts]Teach Yourself Trigonometry - P. Abbott
P. Abbott Teach Yourself Trigonometry The English Universities Press Ltd. 1967 Acrobat 7 Pdf 23.8 Mb. Scanned by artmisa using Canon DR2580C + flatbed option
Keywords: Mathematics; Geometry; Logarithms; Trigonometric Ratios; Solution of Triangles; Circular Measure
Downloads: 846
[texts]Teach Yourself Trigonometry - P. Abbott
P. Abbott Teach Yourself Trigonometry The English Universities Press Ltd. 1967 Acrobat 7 Pdf 23.8 Mb. Scanned by artmisa using Canon DR2580C + flatbed option
Keywords: Mathematics; Geometry; Indices; Logarithms; Trigonometrical Ratios; Angles; Solution of Triangles; Circular Measure; Trigonometrical Equations
Downloads: 442
[texts]Teach Yourself Calculus - P. Abbott
P. Abbott Teach Yourself Calculus Ihe English Universities Press Ltd. 1967 Acrobat 7 Pdf 41.0 Mb. Scanned by artmisa using Canon DR2580C + flatbed option
Keywords: Mathematics; Maxima; Minima; Differentiation; Integration; Standard Integrals; Summation; Hyperbolic Functions; Series; Taylor; MacLaurin; Differential Equations
Downloads: 2,369
[texts]Zinc status response to folic acid supplementation and the effect of level of zinc intake on folate utilization in human subjects - Kauwell, Gail P. Abbott
http://uf.catalog.fcla.edu/uf.jsp?st=UF001938878&ix=nu&I=0&V=D
Downloads: 325
[texts]Search for gravitational-wave bursts in the first year of the fifth LIGO science run - LIGO Scientific Collaboration
We present the results obtained from an all-sky search for gravitational-wave (GW) bursts in the 64-2000 Hz frequency range in data collected by the LIGO detectors during the first year (November 2005 - November 2006) of their fifth science run. The total analyzed livetime was 268.6 days. Multiple hierarchical data analysis methods were invoked in this search. The overall sensitivity expressed in terms of the root-sum-square (rss) strain amplitude h_{rss} for gravitational-wave bursts with vario...
Downloads: 4
[texts]A search for gravitational waves associated with the August 2006 timing glitch of the Vela pulsar - The LIGO Scientific Collaboration
The physical mechanisms responsible for pulsar timing glitches are thought to excite quasi-normal mode oscillations in their parent neutron star that couple to gravitational wave emission. In August 2006, a timing glitch was observed in the radio emission of PSR B0833-45, the Vela pulsar. At the time of the glitch, the two co-located Hanford gravitational wave detectors of the Laser Interferometer Gravitational-wave observatory (LIGO) were operational and taking data as part of the fifth LIGO sc...
Downloads: 3
[texts]Implications For The Origin Of GRB 051103 From LIGO Observations - The LIGO Scientific Collaboration
We present the results of a LIGO search for gravitational waves (GWs) associated with GRB 051103, a short-duration hard-spectrum gamma-ray burst (GRB) whose electromagnetically determined sky position is coincident with the spiral galaxy M81, which is 3.6 Mpc from Earth. Possible progenitors for short-hard GRBs include compact object mergers and soft gamma repeater (SGR) giant flares. A merger progenitor would produce a characteristic GW signal that should be detectable at the distance of M81, w...
Downloads: 2
[texts]First search for gravitational waves from the youngest known neutron star - LIGO Scientific Collaboration
We present a search for periodic gravitational waves from the neutron star in the supernova remnant Cassiopeia A. The search coherently analyzes data in a 12-day interval taken from the fifth science run of the Laser Interferometer Gravitational-Wave Observatory. It searches gravitational wave frequencies from 100 to 300 Hz, and covers a wide range of first and second frequency derivatives appropriate for the age of the remnant and for different spin-down mechanisms...
Downloads: 14
[texts]Calibration of the LIGO Gravitational Wave Detectors in the Fifth Science Run - LIGO Scientific Collaboration
The Laser Interferometer Gravitational Wave Observatory (LIGO) is a network of three detectors built to detect local perturbations in the space-time metric from astrophysical sources. These detectors, two in Hanford, WA and one in Livingston, LA, are power-recycled Fabry-Perot Michelson interferometers. In their fifth science run (S5), between November 2005 and October 2007, these detectors accumulated one year of triple coincident data while operating at their designed sensitivity...
Downloads: 13
[texts]Search for gravitational waves from binary black hole inspiral, merger and ringdown - The LIGO Scientific Collaboration
We present the first modeled search for gravitational waves using the complete binary black hole gravitational waveform from inspiral through the merger and ringdown for binaries with negligible component spin. We searched approximately 2 years of LIGO data taken between November 2005 and September 2007 for systems with component masses of 1-99 solar masses and total masses of 25-100 solar masses. We did not detect any plausible gravitational-wave signals but we do place upper limits on the merg...
Downloads: 5
[texts]Searches for gravitational waves from known pulsars with S5 LIGO data - The LIGO Scientific Collaboration
We present a search for gravitational waves from 116 known millisecond and young pulsars using data from the fifth science run of the LIGO detectors. For this search ephemerides overlapping the run period were obtained for all pulsars using radio and X-ray observations. We demonstrate an updated search method that allows for small uncertainties in the pulsar phase parameters to be included in the search...
Downloads: 8
[texts]Directional limits on persistent gravitational waves using LIGO S5 science data - B. P. Abbott
The gravitational-wave (GW) sky may include nearby pointlike sources as well as astrophysical and cosmological stochastic backgrounds. Since the relative strength and angular distribution of the many possible sources of GWs are not well constrained, searches for GW signals must be performed in a model-independent way. To that end we perform two directional searches for persistent GWs using data from the LIGO S5 science run: one optimized for pointlike sources and one for arbitrary extended sourc...
Downloads: 9
[texts]Beating the spin-down limit on gravitational wave emission from the Vela pulsar - The LIGO Scientific Collaboration
We present direct upper limits on continuous gravitational wave emission from the Vela pulsar using data from the Virgo detector's second science run. These upper limits have been obtained using three independent methods that assume the gravitational wave emission follows the radio timing. Two of the methods produce frequentist upper limits for an assumed known orientation of the star's spin axis and value of the wave polarization angle of, respectively, $1.9\ee{-24}$ and $2.2\ee{-24}$, with 95%...
Downloads: 5
[texts]Sensitivity to Gravitational Waves from Compact Binary Coalescences Achieved during LIGO's Fifth and Virgo's First Science Run - The LIGO Scientific Collaboration
We summarize the sensitivity achieved by the LIGO and Virgo gravitational wave detectors for compact binary coalescence (CBC) searches during LIGO's fifth science run and Virgo's first science run. We present noise spectral density curves for each of the four detectors that operated during these science runs which are representative of the typical performance achieved by the detectors for CBC searches...
Downloads: 8
[texts]Search for Gravitational Wave Bursts from Six Magnetars - J. Abadie
Soft gamma repeaters (SGRs) and anomalous X-ray pulsars (AXPs) are thought to be magnetars: neutron stars powered by extreme magnetic fields. These rare objects are characterized by repeated and sometimes spectacular gamma-ray bursts. The burst mechanism might involve crustal fractures and excitation of non-radial modes which would emit gravitational waves (GWs). We present the results of a search for GW bursts from six galactic magnetars that is sensitive to neutron star f-modes, thought to be ...
Downloads: 4
[texts]Predictions for the Rates of Compact Binary Coalescences Observable by Ground-based Gravitational-wave Detectors - LIGO Scientific Collaboration
We present an up-to-date, comprehensive summary of the rates for all types of compact binary coalescence sources detectable by the Initial and Advanced versions of the ground-based gravitational-wave detectors LIGO and Virgo. Astrophysical estimates for compact-binary coalescence rates depend on a number of assumptions and unknown model parameters, and are still uncertain. The most confident among these estimates are the rate predictions for coalescing binary neutron stars which are based on ext...
Downloads: 15
[texts]Search for gravitational-wave inspiral signals associated with short Gamma-Ray Bursts during LIGO's fifth and Virgo's first science run - The LIGO Scientific Collaboration
Progenitor scenarios for short gamma-ray bursts (short GRBs) include coalescenses of two neutron stars or a neutron star and black hole, which would necessarily be accompanied by the emission of strong gravitational waves. We present a search for these known gravitational-wave signatures in temporal and directional coincidence with 22 GRBs that had sufficient gravitational-wave data available in multiple instruments during LIGO's fifth science run, S5, and Virgo's first science run, VSR1...
Downloads: 18
[texts]Search for gravitational-wave bursts associated with gamma-ray bursts using data from LIGO Science Run 5 and Virgo Science Run 1 - LIGO Scientific Collaboration
We present the results of a search for gravitational-wave bursts associated with 137 gamma-ray bursts (GRBs) that were detected by satellite-based gamma-ray experiments during the fifth LIGO science run and first Virgo science run. The data used in this analysis were collected from 2005 November 4 to 2007 October 1, and most of the GRB triggers were from the Swift satellite. The search uses a coherent network analysis method that takes into account the different locations and orientations of the...
Downloads: 27
[texts]Upper limits on a stochastic gravitational-wave background using LIGO and Virgo interferometers at 600-1000 Hz - J. Abadie
A stochastic background of gravitational waves is expected to arise from a superposition of many incoherent sources of gravitational waves, of either cosmological or astrophysical origin. This background is a target for the current generation of ground-based detectors. In this article we present the first joint search for a stochastic background using data from the LIGO and Virgo interferometers. In a frequency band of 600-1000 Hz, we obtained a 95% upper limit on the amplitude of $\Omega_{\rm G...
Downloads: 11
[texts]Search for Gravitational Waves from Intermediate Mass Binary Black Holes - the LIGO Scientific Collaboration
We present the results of a weakly modeled burst search for gravitational waves from mergers of non-spinning intermediate mass black holes (IMBH) in the total mass range 100--450 solar masses and with the component mass ratios between 1:1 and 4:1. The search was conducted on data collected by the LIGO and Virgo detectors between November of 2005 and October of 2007. No plausible signals were observed by the search which constrains the astrophysical rates of the IMBH mergers as a function of the ...
Downloads: 1
[texts]Parameter estimation for compact binary coalescence signals with the first generation gravitational-wave detector network - the LIGO Scientific Collaboration
Compact binary systems with neutron stars or black holes are one of the most promising sources for ground-based gravitational wave detectors. Gravitational radiation encodes rich information about source physics; thus parameter estimation and model selection are crucial analysis steps for any detection candidate events. Detailed models of the anticipated waveforms enable inference on several parameters, such as component masses, spins, sky location and distance that are essential for new astroph...
Downloads: 5
[texts]The characterization of Virgo data and its impact on gravitational-wave searches - J. Aasi
Between 2007 and 2010 Virgo collected data in coincidence with the LIGO and GEO gravitational-wave (GW) detectors. These data have been searched for GWs emitted by cataclysmic phenomena in the universe, by non-axisymmetric rotating neutron stars or from a stochastic background in the frequency band of the detectors. The sensitivity of GW searches is limited by noise produced by the detector or its environment...
Downloads: 5
[texts]Einstein@Home all-sky search for periodic gravitational waves in LIGO S5 data - J. Aasi
This paper presents results of an all-sky searches for periodic gravitational waves in the frequency range [50, 1190] Hz and with frequency derivative ranges of [-2 x 10^-9, 1.1 x 10^-10] Hz/s for the fifth LIGO science run (S5). The novelty of the search lies in the use of a non-coherent technique based on the Hough-transform to combine the information from coherent searches on timescales of about one day...
Downloads: 4
[texts]Prospects for Localization of Gravitational Wave Transients by the Advanced LIGO and Advanced Virgo Observatories - LIGO Scientific Collaboration
We present a possible observing scenario for the Advanced LIGO and Advanced Virgo gravitational wave detectors over the next decade, with the intention of providing information to the astronomy community to facilitate planning for multi-messenger astronomy with gravitational waves. We determine the expected sensitivity of the network to transient gravitational-wave signals, and study the capability of the network to determine the sky location of the source...
Downloads: 16
[texts]Search for Gravitational Waves from Binary Black Hole Inspiral, Merger and Ringdown in LIGO-Virgo Data from 2009-2010 - The LIGO Scientific Collaboration
We report a search for gravitational waves from the inspiral, merger and ringdown of binary black holes (BBH) with total mass between 25 and 100 solar masses, in data taken at the LIGO and Virgo observatories between July 7, 2009 and October 20, 2010. The maximum sensitive distance of the detectors over this period for a (20,20) Msun coalescence was 300 Mpc. No gravitational wave signals were found...
Downloads: 5
[texts]Swift follow-up observations of candidate gravitational-wave transient events - P. A. Evans
We present the first multi-wavelength follow-up observations of two candidate gravitational-wave (GW) transient events recorded by LIGO and Virgo in their 2009-2010 science run. The events were selected with low latency by the network of GW detectors and their candidate sky locations were observed by the Swift observatory. Image transient detection was used to analyze the collected electromagnetic data, which were found to be consistent with background...
Downloads: 5
[texts]All-sky search for gravitational-wave bursts in the second joint LIGO-Virgo run - the LIGO Scientific Collaboration
We present results from a search for gravitational-wave bursts in the data collected by the LIGO and Virgo detectors between July 7, 2009 and October 20, 2010: data are analyzed when at least two of the three LIGO-Virgo detectors are in coincident operation, with a total observation time of 207 days. The analysis searches for transients of duration < 1 s over the frequency band 64-5000 Hz, without other assumptions on the signal waveform, polarization, direction or occurrence time...
Downloads: 15
[texts]Search for Gravitational Waves from Low Mass Compact Binary Coalescence in LIGO's Sixth Science Run and Virgo's Science Runs 2 and 3 - the LIGO Scientific Collaboration
We report on a search for gravitational waves from coalescing compact binaries using LIGO and Virgo observations between July 7, 2009 and October 20, 2010. We searched for signals from binaries with total mass between 2 and 25 solar masses; this includes binary neutron stars, binary black holes, and binaries consisting of a black hole and neutron star. The detectors were sensitive to systems up to 40 Mpc distant for binary neutron stars, and further for higher mass systems...
Downloads: 15
[texts]All-sky Search for Periodic Gravitational Waves in the Full S5 LIGO Data - J. Abadie
We report on an all-sky search for periodic gravitational waves in the frequency band 50-800 Hz and with the frequency time derivative in the range of 0 through -6e-9 Hz/s. Such a signal could be produced by a nearby spinning and slightly non-axisymmetric isolated neutron star in our galaxy. After recent improvements in the search program that yielded a 10x increase in computational efficiency, we have searched in two years of data collected during LIGO's fifth science run and have obtained the ...
Downloads: 8
[texts]Search for gravitational waves associated with gamma-ray bursts during LIGO science run 6 and Virgo science runs 2 and 3 - The LIGO Scientific Collaboration
We present the results of a search for gravitational waves associated with 154 gamma-ray bursts (GRBs) that were detected by satellite-based gamma-ray experiments in 2009-2010, during the sixth LIGO science run and the second and third Virgo science runs. We perform two distinct searches: a modeled search for coalescences of either two neutron stars or a neutron star and black hole; and a search for generic, unmodeled gravitational-wave bursts...
Downloads: 29
[texts]Implementation and testing of the first prompt search for gravitational wave transients with electromagnetic counterparts - The LIGO Scientific Collaboration
Aims. A transient astrophysical event observed in both gravitational wave (GW) and electromagnetic (EM) channels would yield rich scientific rewards. A first program initiating EM follow-ups to possible transient GW events has been developed and exercised by the LIGO and Virgo community in association with several partners. In this paper, we describe and evaluate the methods used to promptly identify and localize GW event candidates and to request images of targeted sky locations...
Downloads: 33
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